If it is lackluster, or streamlined too much, I'm sure that many of us will shrug our shoulders and continue with the crunchy system we like. If it improves on PF, then I'm sure it will put butts in the seats. Starfinder makes a lot of people sit down at the store I attend, so I don't see real issue with PF2 being announced. I will run my game, like I run my game. If we switch to the new system, we switch.

But I have tons of stuff for PF, so unless I'm forced to run against my will, I'm going to run my game. I'm sure that there will be some things I houserule, just like I have some things from the early days Red Box in my game. It's your game, and I always encourage people to run what they feel is best for their table.

For now all I can say is have patience, and the folks at Frog God will make their decision when they are ready to. Likely after they've had a chance to get their webbed hands on the final product, and look at it. At the moment nobody can make an informed decision.

Regarding PF1, I think it is unlikely that you will ever see a new handcover release again. The pricing of the current stock can only go down from here. Plus, I am curious if Greg continues past the Campaign Setting.

I saw a mention of Tenkar's hinting that a PF1 product got cancelled at GaryCon?

With the announcement of PF2 a wiser move would probably be to try to put some distance between big campaign setting books and actual crunch so the books won't be outdated when a system disappears. This is impossible for monster manuals (obviously) and I haven't a clue as to how to achieve this for adventures that currently contain statblocks on each page.